Coral reef ecosystems - National Oceanic and Atmospheric …
https://www.noaa.gov/education/resource-collections/marine-life/coral-reef-ecosystems
WEBFeb 1, 2019 · Topics: Coral reefs are some of the most diverse ecosystems in the world. Coral polyps, the animals primarily responsible for building reefs, can take many forms: large reef building colonies, graceful flowing fans, and even small, solitary organisms. Thousands of species of corals have been discovered; some live in warm, shallow, …
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